Dave Wilson
Published © MIT

Do It Yourself Siren Alarm Based on ESP32 Wemos D1 R1

My home automation system needed a loud alarm signal when either "panic" or "fire" was declared by my family. A 12 volt siren was perfect. `

IntermediateFull instructions provided3 hours1
Do It Yourself Siren Alarm Based on ESP32 Wemos D1 R1

Things used in this project

Hardware components

Linear Regulator (7805)
Linear Regulator (7805)
×1
IRLB8721 N-chan MOSFET
×1
Adafruit Perma-Proto Half-sized Breadboard PCB - Single
×1
MINI Wemos D1 ESP32 ESP-32 WIFI Development Bluetooth ESP8266 CP2104 Module
×1
Capacitor 100 µF
Capacitor 100 µF
×2
Capacitor 22 µF
Capacitor 22 µF
×2
Ceramic Disc Capacitor, 0.1 µF
Ceramic Disc Capacitor, 0.1 µF
×3
Breadboard-friendly 2.1mm DC barrel jack
×1
Female Header 8 Position 1 Row (0.1")
Female Header 8 Position 1 Row (0.1")
×1
Adafruit 2mm 10 pin Socket Headers (for XBee) - Pack of 2
×1
12V 2A 24W Power Supply AC to DC 110-240V Adapter Plug for 3528 5050 LED Strip
×1
XINFLY Wired Alarm Siren Horn 1-tone 15W DC 12V Outdoor with Bracket for Home Security Protection System
×1
Resistor 10k ohm
Resistor 10k ohm
×1
CARLON 1-Gang Gray PVC Weatherproof Old Work Standard Rectangular Exterior Electrical Box
×1

Software apps and online services

Arduino IDE
Arduino IDE

Hand tools and fabrication machines

Soldering iron (generic)
Soldering iron (generic)
Solder Wire, Lead Free
Solder Wire, Lead Free
Multitool, Screwdriver
Multitool, Screwdriver
Drill / Driver, Cordless
Drill / Driver, Cordless
Set Screw, Pack of 10
Set Screw, Pack of 10
Drill bits

Story

Read more

Schematics

Keynote Protoboard Design

Simple drawing of the parts and connections on an Adafruit protoboard.

Code

parttimehacker/hackster-io-siren

Github files for an Arduino application to sound an alarm with a siren based on the ESP32.

Credits

Dave Wilson

Dave Wilson

2 projects • 3 followers
Software guy that is learning to design digital home automation and wearable products using open source hardware and software.

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